Final answer:
To keep a solid dry after filtration, vacuum filtration is commonly used, employing a filter medium and applying a pressure differential to quickly separate the solid from the liquid.
Step-by-step explanation:
If you want to keep the solid and ensure it is dry after filtration, the type of filtration typically used is known as vacuum filtration. This method involves passing a mixture through a filter medium that effectively separates the solid from the liquid. Vacuum filtration accelerates the process by applying a pressure differential, which pulls the liquid through the filter more quickly, allowing the solid to remain on the filter paper dry.
This is often preferable when dealing with compounds that need to be recovered dry for further use or analysis. In a laboratory setting, a Buchner funnel and flask setup is commonly used, with the vacuum being provided by a water aspirator or a vacuum pump.